Spice up a dull-looking Powerpoint Presentation

I have to give a Powerpoint presentation on Thursday and I have prepared a very basic Powerpoint document for this. Unfortunately, it looks very flat, because I am not an expert on graphic design. Therefore, I need someone who is good with colours, fonts, graphics and images to spend a few hours spicing it up. Because of the tight deadline, I can only consider proposals from people who can commit to doing it immediately and sending me the first draft by 11am GMT on Wednesday. I can only consider proposals from people in the UK time zone.

Thanks.

Brad.